Close
    Enter your
    text here

    Bright Sensors’ Gas Quality Calculator

    Gas Composition

    Methane (CH4): %
    Ethane (C2H6): %
    Propane (C3H8): %
    Butane (n-C4H10): %
    Isobutane (i-C4H10): %
    Pentane (n-C5H12): %
    Isopentane (i-C5H12): %
    Neopentane (neo-C5H12): %
    Hexane (n-C6H14): %
    Heptane (n-C7H16): %
    Octane (n-C8H18): %
    Nonane (n-C9H20): %
    Decane (n-C10H22): %
    Ethylene (C2H4): %
    Hydrogen (H2): %
    Hydrogen Sulfide (H2S): %
    Nitrogen (N2): %
    Oxygen (O2): %
    Carbon Dioxide (CO2): %
    Carbon Monoxide (CO): %
    Water vapor (H2O): %
    Argon (Ar): %
    Helium (He): %
    Total percentage: %

    Input Parameters

    Select reference conditions:
    Select output units:
    Select composition basis:

    Gas Properties

    • Enter the gas compositions in percentages and click Calculate

    The Gross and Net Calorific Value, Gross and Net Wobbe Index, Density, Relative Density, Compressibility and Stoichiometric Air-Fuel Ratio are calculated with variable reference conditions. Check the standard reference conditions in your region to ensure correct results.

    This calculator uses ISO 6976:2016 and GPA 2172-19 to determine the Wobbe Index, Calorific Value, Density, Relative Density and Compressibility of a natural gas blend. The Methane Number is calculated using ISO 23306:2020.

    The Air-Fuel Ratio is calculated on a volumetric basis with the oxygen in air assumed to be 20.946% by volume.

    The calculator is developed by Bright Sensors SA and the same calculation is deployed in our plug & play and affordable gas quality analyzers like the BlueEye™ Ex-D and the BlueEye™ Mobile. For more information on our products, any questions about gas quality sensing or feedback on this calculator please contact us.